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The only Rainwater Harvesting System supplier you will ever need

Stormsaver Active Attenuation

Active Attenuation crates and rainwater harvestingThe Stormsaver Active Attenuation brings together Attenuation and Rainwater Harvesting thanks to Stormharvester weather prediction technology. The system counts towards 100% of attenuation volumes on-site at the same time as harvesting and re-using rainwater for a range of applications.

View a video of how it works here

Flood prevention infrastructure, comprising tanks or crates, are now installed into all new commercial developments. These structures capture rainfall run-off and slowly release it at an allowed rate, to the storm drain system, but unbelievably they sit empty for over 95% of the time waiting for rain.

By separating the attenuation structures into two separate tanks and installing our technology into the clean roof run-off, Stormsaver enables previously wasted storage capacity within these tanks to be used for rainwater harvesting in a way that has never been possible before. The storage can be provided using crates, tunnels or large single-piece GRP tanks and our solution can use any of these.


So how does it work?

Active Attenuation tanks and rainwater harvesting

Half of the attenuation tanks take run-off from the carparks and act just as a regular attenuation tank draining down following heavy rainfall.

Working in partnership with the Stormharvester team, we combine our products with their technology which is linked directly to a highly accurate short to medium term Met Office Rain Prediction system.

When rainfall is predicted, Stormharvester's telemetry recognises the anticipated rainfall event. A control system lowers the water in the attenuation tank to a safe level, so when the rain arrives all the necessary attenuation capacity is available within the tank.

The system has a built-in failsafe system so that there is no risk of flooding even in the unlikely event of a system failure.

Utilising mandatory flood protection infrastructure in this way the Stormsaver solution provides all new commercial buildings with a source of valuable re-cycled rainwater without the need for additional expensive infrastructure. The system reduces installation costs and reliance on main water supplies at the same time as maintaining necessary attenuation capacity.

Suddenly, your unused attenuation tank is working for you; creating revenue, reducing running costs and making you more sustainable and environmentally friendly.


The Benefits of Active Attenuation

  • Reduce Construction costs
  • Reduce paybacks for Rainwater Harvesting
  • Additional BREEAM points (3 points)
  • Reduce foot print for sites with Rainwater Harvesting and Attenuation
  • 100% of the cost of the rainwater harvesting can be offset against tax under the ECA scheme
  • Reduces discharge rates in storm events
  • Reduces demand on public water supply
  • Saves money on water bills
  • Assists with stormwater and flood control.

For more information download our datasheet below, or contact our commercial sales team on 01636 815254. Our team will be able to help you with your specification and sizing to ensure you have the correct solution for your site.

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Quick Quote

"I would just like to say that your Commissioning Engineer, Andy Pink was a pleasure to work with at our site this week and extremely professional. Carlsberg don’t do Rainwater Engineers but if they did Andy Pink would be their Hero!"



Site Manager - WM Building Services (Leicester) Ltd

‘We have been working with Stormsaver for many years, and they have shown a great level of detail and knowledge within their specialist field. We have always found the team to be helpful and proactive, with any technical queries or issues raised’." target="_blank">

Managing Director - Phase Mechanical

“We have been involved in the specification and installation of Stormsaver rainwater harvesting systems now for over 10 years. Our very first experience of rainwater recovery was with the company and I remember Michael himself setting up and commissioning this system on site. What impre ...ssed me most even all those years ago was the company’s attention to detail, enthusiasm and professionalism and this has continued as the company has grown to what it is today.  We have no hesitation in saying our first call when it comes to rainwater recovery will be to Stormsaver, their prompt reaction, competitiveness and quality of equipment is second to none and they will always try to have the system fully commissioned when they leave the site.  We hope they continue the great work they have already done and we look forward to many more successful years working together to save even more water”

Director - WM Building Services (Leicester)

‘Stormsaver have always provided a quick response to any queries and their customer service is superb’  

Project Estimator - Walter Miles

"There are many companies claiming they are experts in rainwater harvesting. After searching the market place we would only endorse Stormsaver, for their detailed expertise, knowledge, and high integrity. To me, this speaks volumes.  As the market expands, and the interest in rain ...water harvesting increases I expect Stormsaver to lead the way."

Graham Mann - Director, The Alternative Water Company

" I have worked with Stormsaver for a number of years and been very pleased with the service and support provided, Lisa has been professional and offered good technical advice, which is always project specific.

I have been impressed with how the company has grown and ... moved with the times and look forward to the next project."

Alun Bevans - Senior Public Health Engineer at Arup

“We installed the Stormsaver domestic rainwater harvesting system 8 years ago. The savings on our mains water consumption have been amazing. We are a 4 person household, with 2 kids so lots of baths and clothes washing! We use around 56m3 of mains water a year the s ...ame as an average single person household without rainwater harvesting.  Our systems provides rainwater for toilets, laundry and irrigation and has reduced our water bill over £200 a year. I specialise in designing and building low energy housing and it is important that I not only research the best available products, but actual experience using them. The Stormsaver system has been simple to install and maintain with very good after market care, I will be using their product again.”

Charlie Luxton - Architect and TV Presenter

Every day I continue to be delighted with the results that the Stormsaver rainwater harvesting system is delivering. I tell everyone about it! We've even made our water meter public to show how much water we save!

Kelvin Jones, Gorseinon Development Trust